wpa_supplicant/config_winreg.c

   1 /*
   2  * WPA Supplicant / Configuration backend: Windows registry
   3  * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  *
  14  * This file implements a configuration backend for Windows registry. All the
  15  * configuration information is stored in the registry and the format for
  16  * network configuration fields is same as described in the sample
  17  * configuration file, wpa_supplicant.conf.
  18  *
  19  * Configuration data is in
  20  * \a HKEY_LOCAL_MACHINE\\SOFTWARE\\%wpa_supplicant\\configs
  21  * key. Each configuration profile has its own key under this. In terms of text
  22  * files, each profile would map to a separate text file with possibly multiple
  23  * networks. Under each profile, there is a networks key that lists all
  24  * networks as a subkey. Each network has set of values in the same way as
  25  * network block in the configuration file. In addition, blobs subkey has
  26  * possible blobs as values.
  27  *
  28  * Example network configuration block:
  29  * \verbatim
  30 HKEY_LOCAL_MACHINE\SOFTWARE\wpa_supplicant\configs\test\networks\0000
  31    ssid="example"
  32    key_mgmt=WPA-PSK
  33 \endverbatim
  34  */
  35
  36 #include "includes.h"
  37
  38 #include "common.h"
  39 #include "uuid.h"
  40 #include "config.h"
  41
  42 #ifndef WPA_KEY_ROOT
  43 #define WPA_KEY_ROOT HKEY_LOCAL_MACHINE
  44 #endif
  45 #ifndef WPA_KEY_PREFIX
  46 #define WPA_KEY_PREFIX TEXT("SOFTWARE\\wpa_supplicant")
  47 #endif
  48
  49 #ifdef UNICODE
  50 #define TSTR "%S"
  51 #else /* UNICODE */
  52 #define TSTR "%s"
  53 #endif /* UNICODE */
  54
  55
  56 static int wpa_config_read_blobs(struct wpa_config *config, HKEY hk)
  57 {
  58         struct wpa_config_blob *blob;
  59         int errors = 0;
  60         HKEY bhk;
  61         LONG ret;
  62         DWORD i;
  63
  64         ret = RegOpenKeyEx(hk, TEXT("blobs"), 0, KEY_QUERY_VALUE, &bhk);
  65         if (ret != ERROR_SUCCESS) {
  66                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
  67                            "blobs key");
  68                 return 0; /* assume no blobs */
  69         }
  70
  71         for (i = 0; ; i++) {
  72 #define TNAMELEN 255
  73                 TCHAR name[TNAMELEN];
  74                 char data[4096];
  75                 DWORD namelen, datalen, type;
  76
  77                 namelen = TNAMELEN;
  78                 datalen = sizeof(data);
  79                 ret = RegEnumValue(bhk, i, name, &namelen, NULL, &type,
  80                                    (LPBYTE) data, &datalen);
  81
  82                 if (ret == ERROR_NO_MORE_ITEMS)
  83                         break;
  84
  85                 if (ret != ERROR_SUCCESS) {
  86                         wpa_printf(MSG_DEBUG, "RegEnumValue failed: 0x%x",
  87                                    (unsigned int) ret);
  88                         break;
  89                 }
  90
  91                 if (namelen >= TNAMELEN)
  92                         namelen = TNAMELEN - 1;
  93                 name[namelen] = TEXT('\0');
  94                 wpa_unicode2ascii_inplace(name);
  95
  96                 if (datalen >= sizeof(data))
  97                         datalen = sizeof(data) - 1;
  98
  99                 wpa_printf(MSG_MSGDUMP, "blob %d: field='%s' len %d",
 100                            (int) i, name, (int) datalen);
 101
 102                 blob = os_zalloc(sizeof(*blob));
 103                 if (blob == NULL) {
 104                         errors++;
 105                         break;
 106                 }
 107                 blob->name = os_strdup((char *) name);
 108                 blob->data = os_malloc(datalen);
 109                 if (blob->name == NULL || blob->data == NULL) {
 110                         wpa_config_free_blob(blob);
 111                         errors++;
 112                         break;
 113                 }
 114                 os_memcpy(blob->data, data, datalen);
 115                 blob->len = datalen;
 116
 117                 wpa_config_set_blob(config, blob);
 118         }
 119
 120         RegCloseKey(bhk);
 121
 122         return errors ? -1 : 0;
 123 }
 124
 125
 126 static int wpa_config_read_reg_dword(HKEY hk, const TCHAR *name, int *_val)
 127 {
 128         DWORD val, buflen;
 129         LONG ret;
 130
 131         buflen = sizeof(val);
 132         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) &val, &buflen);
 133         if (ret == ERROR_SUCCESS && buflen == sizeof(val)) {
 134                 wpa_printf(MSG_DEBUG, TSTR "=%d", name, (int) val);
 135                 *_val = val;
 136                 return 0;
 137         }
 138
 139         return -1;
 140 }
 141
 142
 143 static char * wpa_config_read_reg_string(HKEY hk, const TCHAR *name)
 144 {
 145         DWORD buflen;
 146         LONG ret;
 147         TCHAR *val;
 148
 149         buflen = 0;
 150         ret = RegQueryValueEx(hk, name, NULL, NULL, NULL, &buflen);
 151         if (ret != ERROR_SUCCESS)
 152                 return NULL;
 153         val = os_malloc(buflen);
 154         if (val == NULL)
 155                 return NULL;
 156
 157         ret = RegQueryValueEx(hk, name, NULL, NULL, (LPBYTE) val, &buflen);
 158         if (ret != ERROR_SUCCESS) {
 159                 os_free(val);
 160                 return NULL;
 161         }
 162
 163         wpa_unicode2ascii_inplace(val);
 164         wpa_printf(MSG_DEBUG, TSTR "=%s", name, (char *) val);
 165         return (char *) val;
 166 }
 167
 168
 169 #ifdef CONFIG_WPS
 170 static int wpa_config_read_global_uuid(struct wpa_config *config, HKEY hk)
 171 {
 172         char *str;
 173         int ret = 0;
 174
 175         str = wpa_config_read_reg_string(hk, TEXT("uuid"));
 176         if (str == NULL)
 177                 return 0;
 178
 179         if (uuid_str2bin(str, config->uuid))
 180                 ret = -1;
 181
 182         os_free(str);
 183
 184         return ret;
 185 }
 186
 187
 188 static int wpa_config_read_global_os_version(struct wpa_config *config,
 189                                              HKEY hk)
 190 {
 191         char *str;
 192         int ret = 0;
 193
 194         str = wpa_config_read_reg_string(hk, TEXT("os_version"));
 195         if (str == NULL)
 196                 return 0;
 197
 198         if (hexstr2bin(str, config->os_version, 4))
 199                 ret = -1;
 200
 201         os_free(str);
 202
 203         return ret;
 204 }
 205 #endif /* CONFIG_WPS */
 206
 207
 208 static int wpa_config_read_global(struct wpa_config *config, HKEY hk)
 209 {
 210         int errors = 0;
 211
 212         wpa_config_read_reg_dword(hk, TEXT("ap_scan"), &config->ap_scan);
 213         wpa_config_read_reg_dword(hk, TEXT("fast_reauth"),
 214                                   &config->fast_reauth);
 215         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 216                                   (int *) &config->dot11RSNAConfigPMKLifetime);
 217         wpa_config_read_reg_dword(hk,
 218                                   TEXT("dot11RSNAConfigPMKReauthThreshold"),
 219                                   (int *)
 220                                   &config->dot11RSNAConfigPMKReauthThreshold);
 221         wpa_config_read_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 222                                   (int *) &config->dot11RSNAConfigSATimeout);
 223         wpa_config_read_reg_dword(hk, TEXT("update_config"),
 224                                   &config->update_config);
 225
 226         if (wpa_config_read_reg_dword(hk, TEXT("eapol_version"),
 227                                       &config->eapol_version) == 0) {
 228                 if (config->eapol_version < 1 ||
 229                     config->eapol_version > 2) {
 230                         wpa_printf(MSG_ERROR, "Invalid EAPOL version (%d)",
 231                                    config->eapol_version);
 232                         errors++;
 233                 }
 234         }
 235
 236         config->ctrl_interface = wpa_config_read_reg_string(
 237                 hk, TEXT("ctrl_interface"));
 238
 239 #ifdef CONFIG_WPS
 240         if (wpa_config_read_global_uuid(config, hk))
 241                 errors++;
 242         config->device_name = wpa_config_read_reg_string(
 243                 hk, TEXT("device_name"));
 244         config->manufacturer = wpa_config_read_reg_string(
 245                 hk, TEXT("manufacturer"));
 246         config->model_name = wpa_config_read_reg_string(
 247                 hk, TEXT("model_name"));
 248         config->serial_number = wpa_config_read_reg_string(
 249                 hk, TEXT("serial_number"));
 250         config->device_type = wpa_config_read_reg_string(
 251                 hk, TEXT("device_type"));
 252         config->config_methods = wpa_config_read_reg_string(
 253                 hk, TEXT("config_methods"));
 254         if (wpa_config_read_global_os_version(config, hk))
 255                 errors++;
 256         wpa_config_read_reg_dword(hk, TEXT("wps_cred_processing"),
 257                                   &config->wps_cred_processing);
 258 #endif /* CONFIG_WPS */
 259 #ifdef CONFIG_P2P
 260         config->p2p_ssid_postfix = wpa_config_read_reg_string(
 261                 hk, TEXT("p2p_ssid_postfix"));
 262 #endif /* CONFIG_P2P */
 263
 264         wpa_config_read_reg_dword(hk, TEXT("bss_max_count"),
 265                                   (int *) &config->bss_max_count);
 266         wpa_config_read_reg_dword(hk, TEXT("filter_ssids"),
 267                                   &config->filter_ssids);
 268
 269         return errors ? -1 : 0;
 270 }
 271
 272
 273 static struct wpa_ssid * wpa_config_read_network(HKEY hk, const TCHAR *netw,
 274                                                  int id)
 275 {
 276         HKEY nhk;
 277         LONG ret;
 278         DWORD i;
 279         struct wpa_ssid *ssid;
 280         int errors = 0;
 281
 282         ret = RegOpenKeyEx(hk, netw, 0, KEY_QUERY_VALUE, &nhk);
 283         if (ret != ERROR_SUCCESS) {
 284                 wpa_printf(MSG_DEBUG, "Could not open wpa_supplicant config "
 285                            "network '" TSTR "'", netw);
 286                 return NULL;
 287         }
 288
 289         wpa_printf(MSG_MSGDUMP, "Start of a new network '" TSTR "'", netw);
 290         ssid = os_zalloc(sizeof(*ssid));
 291         if (ssid == NULL) {
 292                 RegCloseKey(nhk);
 293                 return NULL;
 294         }
 295         ssid->id = id;
 296
 297         wpa_config_set_network_defaults(ssid);
 298
 299         for (i = 0; ; i++) {
 300                 TCHAR name[255], data[1024];
 301                 DWORD namelen, datalen, type;
 302
 303                 namelen = 255;
 304                 datalen = sizeof(data);
 305                 ret = RegEnumValue(nhk, i, name, &namelen, NULL, &type,
 306                                    (LPBYTE) data, &datalen);
 307
 308                 if (ret == ERROR_NO_MORE_ITEMS)
 309                         break;
 310
 311                 if (ret != ERROR_SUCCESS) {
 312                         wpa_printf(MSG_ERROR, "RegEnumValue failed: 0x%x",
 313                                    (unsigned int) ret);
 314                         break;
 315                 }
 316
 317                 if (namelen >= 255)
 318                         namelen = 255 - 1;
 319                 name[namelen] = TEXT('\0');
 320
 321                 if (datalen >= 1024)
 322                         datalen = 1024 - 1;
 323                 data[datalen] = TEXT('\0');
 324
 325                 wpa_unicode2ascii_inplace(name);
 326                 wpa_unicode2ascii_inplace(data);
 327                 if (wpa_config_set(ssid, (char *) name, (char *) data, 0) < 0)
 328                         errors++;
 329         }
 330
 331         RegCloseKey(nhk);
 332
 333         if (ssid->passphrase) {
 334                 if (ssid->psk_set) {
 335                         wpa_printf(MSG_ERROR, "Both PSK and passphrase "
 336                                    "configured for network '" TSTR "'.", netw);
 337                         errors++;
 338                 }
 339                 wpa_config_update_psk(ssid);
 340         }
 341
 342         if ((ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK |
 343                                WPA_KEY_MGMT_PSK_SHA256)) &&
 344             !ssid->psk_set) {
 345                 wpa_printf(MSG_ERROR, "WPA-PSK accepted for key management, "
 346                            "but no PSK configured for network '" TSTR "'.",
 347                            netw);
 348                 errors++;
 349         }
 350
 351         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 352             !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 353             !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
 354                 /* Group cipher cannot be stronger than the pairwise cipher. */
 355                 wpa_printf(MSG_DEBUG, "Removed CCMP from group cipher "
 356                            "list since it was not allowed for pairwise "
 357                            "cipher for network '" TSTR "'.", netw);
 358                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 359         }
 360
 361         if (errors) {
 362                 wpa_config_free_ssid(ssid);
 363                 ssid = NULL;
 364         }
 365
 366         return ssid;
 367 }
 368
 369
 370 static int wpa_config_read_networks(struct wpa_config *config, HKEY hk)
 371 {
 372         HKEY nhk;
 373         struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
 374         int errors = 0;
 375         LONG ret;
 376         DWORD i;
 377
 378         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_ENUMERATE_SUB_KEYS,
 379                            &nhk);
 380         if (ret != ERROR_SUCCESS) {
 381                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant networks "
 382                            "registry key");
 383                 return -1;
 384         }
 385
 386         for (i = 0; ; i++) {
 387                 TCHAR name[255];
 388                 DWORD namelen;
 389
 390                 namelen = 255;
 391                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 392                                    NULL);
 393
 394                 if (ret == ERROR_NO_MORE_ITEMS)
 395                         break;
 396
 397                 if (ret != ERROR_SUCCESS) {
 398                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x",
 399                                    (unsigned int) ret);
 400                         break;
 401                 }
 402
 403                 if (namelen >= 255)
 404                         namelen = 255 - 1;
 405                 name[namelen] = '\0';
 406
 407                 ssid = wpa_config_read_network(nhk, name, i);
 408                 if (ssid == NULL) {
 409                         wpa_printf(MSG_ERROR, "Failed to parse network "
 410                                    "profile '%s'.", name);
 411                         errors++;
 412                         continue;
 413                 }
 414                 if (head == NULL) {
 415                         head = tail = ssid;
 416                 } else {
 417                         tail->next = ssid;
 418                         tail = ssid;
 419                 }
 420                 if (wpa_config_add_prio_network(config, ssid)) {
 421                         wpa_printf(MSG_ERROR, "Failed to add network profile "
 422                                    "'%s' to priority list.", name);
 423                         errors++;
 424                         continue;
 425                 }
 426         }
 427
 428         RegCloseKey(nhk);
 429
 430         config->ssid = head;
 431
 432         return errors ? -1 : 0;
 433 }
 434
 435
 436 struct wpa_config * wpa_config_read(const char *name)
 437 {
 438         TCHAR buf[256];
 439         int errors = 0;
 440         struct wpa_config *config;
 441         HKEY hk;
 442         LONG ret;
 443
 444         config = wpa_config_alloc_empty(NULL, NULL);
 445         if (config == NULL)
 446                 return NULL;
 447         wpa_printf(MSG_DEBUG, "Reading configuration profile '%s'", name);
 448
 449 #ifdef UNICODE
 450         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 451 #else /* UNICODE */
 452         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 453 #endif /* UNICODE */
 454
 455         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_QUERY_VALUE, &hk);
 456         if (ret != ERROR_SUCCESS) {
 457                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 458                            "configuration registry HKLM\\" TSTR, buf);
 459                 os_free(config);
 460                 return NULL;
 461         }
 462
 463         if (wpa_config_read_global(config, hk))
 464                 errors++;
 465
 466         if (wpa_config_read_networks(config, hk))
 467                 errors++;
 468
 469         if (wpa_config_read_blobs(config, hk))
 470                 errors++;
 471
 472         wpa_config_debug_dump_networks(config);
 473
 474         RegCloseKey(hk);
 475
 476         if (errors) {
 477                 wpa_config_free(config);
 478                 config = NULL;
 479         }
 480
 481         return config;
 482 }
 483
 484
 485 static int wpa_config_write_reg_dword(HKEY hk, const TCHAR *name, int val,
 486                                       int def)
 487 {
 488         LONG ret;
 489         DWORD _val = val;
 490
 491         if (val == def) {
 492                 RegDeleteValue(hk, name);
 493                 return 0;
 494         }
 495
 496         ret = RegSetValueEx(hk, name, 0, REG_DWORD, (LPBYTE) &_val,
 497                             sizeof(_val));
 498         if (ret != ERROR_SUCCESS) {
 499                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s=%d: error %d",
 500                            name, val, (int) GetLastError());
 501                 return -1;
 502         }
 503
 504         return 0;
 505 }
 506
 507
 508 static int wpa_config_write_reg_string(HKEY hk, const char *name,
 509                                        const char *val)
 510 {
 511         LONG ret;
 512         TCHAR *_name, *_val;
 513
 514         _name = wpa_strdup_tchar(name);
 515         if (_name == NULL)
 516                 return -1;
 517
 518         if (val == NULL) {
 519                 RegDeleteValue(hk, _name);
 520                 os_free(_name);
 521                 return 0;
 522         }
 523
 524         _val = wpa_strdup_tchar(val);
 525         if (_val == NULL) {
 526                 os_free(_name);
 527                 return -1;
 528         }
 529         ret = RegSetValueEx(hk, _name, 0, REG_SZ, (BYTE *) _val,
 530                             (os_strlen(val) + 1) * sizeof(TCHAR));
 531         if (ret != ERROR_SUCCESS) {
 532                 wpa_printf(MSG_ERROR, "WINREG: Failed to set %s='%s': "
 533                            "error %d", name, val, (int) GetLastError());
 534                 os_free(_name);
 535                 os_free(_val);
 536                 return -1;
 537         }
 538
 539         os_free(_name);
 540         os_free(_val);
 541         return 0;
 542 }
 543
 544
 545 static int wpa_config_write_global(struct wpa_config *config, HKEY hk)
 546 {
 547 #ifdef CONFIG_CTRL_IFACE
 548         wpa_config_write_reg_string(hk, "ctrl_interface",
 549                                     config->ctrl_interface);
 550 #endif /* CONFIG_CTRL_IFACE */
 551
 552         wpa_config_write_reg_dword(hk, TEXT("eapol_version"),
 553                                    config->eapol_version,
 554                                    DEFAULT_EAPOL_VERSION);
 555         wpa_config_write_reg_dword(hk, TEXT("ap_scan"), config->ap_scan,
 556                                    DEFAULT_AP_SCAN);
 557         wpa_config_write_reg_dword(hk, TEXT("fast_reauth"),
 558                                    config->fast_reauth, DEFAULT_FAST_REAUTH);
 559         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigPMKLifetime"),
 560                                    config->dot11RSNAConfigPMKLifetime, 0);
 561         wpa_config_write_reg_dword(hk,
 562                                    TEXT("dot11RSNAConfigPMKReauthThreshold"),
 563                                    config->dot11RSNAConfigPMKReauthThreshold,
 564                                    0);
 565         wpa_config_write_reg_dword(hk, TEXT("dot11RSNAConfigSATimeout"),
 566                                    config->dot11RSNAConfigSATimeout, 0);
 567         wpa_config_write_reg_dword(hk, TEXT("update_config"),
 568                                    config->update_config,
 569                                    0);
 570 #ifdef CONFIG_WPS
 571         if (!is_nil_uuid(config->uuid)) {
 572                 char buf[40];
 573                 uuid_bin2str(config->uuid, buf, sizeof(buf));
 574                 wpa_config_write_reg_string(hk, "uuid", buf);
 575         }
 576         wpa_config_write_reg_string(hk, "device_name", config->device_name);
 577         wpa_config_write_reg_string(hk, "manufacturer", config->manufacturer);
 578         wpa_config_write_reg_string(hk, "model_name", config->model_name);
 579         wpa_config_write_reg_string(hk, "model_number", config->model_number);
 580         wpa_config_write_reg_string(hk, "serial_number",
 581                                     config->serial_number);
 582         wpa_config_write_reg_string(hk, "device_type", config->device_type);
 583         wpa_config_write_reg_string(hk, "config_methods",
 584                                     config->config_methods);
 585         if (WPA_GET_BE32(config->os_version)) {
 586                 char vbuf[10];
 587                 os_snprintf(vbuf, sizeof(vbuf), "%08x",
 588                             WPA_GET_BE32(config->os_version));
 589                 wpa_config_write_reg_string(hk, "os_version", vbuf);
 590         }
 591         wpa_config_write_reg_dword(hk, TEXT("wps_cred_processing"),
 592                                    config->wps_cred_processing, 0);
 593 #endif /* CONFIG_WPS */
 594 #ifdef CONFIG_P2P
 595         wpa_config_write_reg_string(hk, "p2p_ssid_postfix",
 596                                     config->p2p_ssid_postfix);
 597 #endif /* CONFIG_P2P */
 598
 599         wpa_config_write_reg_dword(hk, TEXT("bss_max_count"),
 600                                    config->bss_max_count,
 601                                    DEFAULT_BSS_MAX_COUNT);
 602         wpa_config_write_reg_dword(hk, TEXT("filter_ssids"),
 603                                    config->filter_ssids, 0);
 604
 605         return 0;
 606 }
 607
 608
 609 static int wpa_config_delete_subkeys(HKEY hk, const TCHAR *key)
 610 {
 611         HKEY nhk;
 612         int i, errors = 0;
 613         LONG ret;
 614
 615         ret = RegOpenKeyEx(hk, key, 0, KEY_ENUMERATE_SUB_KEYS | DELETE, &nhk);
 616         if (ret != ERROR_SUCCESS) {
 617                 wpa_printf(MSG_DEBUG, "WINREG: Could not open key '" TSTR
 618                            "' for subkey deletion: error 0x%x (%d)", key,
 619                            (unsigned int) ret, (int) GetLastError());
 620                 return 0;
 621         }
 622
 623         for (i = 0; ; i++) {
 624                 TCHAR name[255];
 625                 DWORD namelen;
 626
 627                 namelen = 255;
 628                 ret = RegEnumKeyEx(nhk, i, name, &namelen, NULL, NULL, NULL,
 629                                    NULL);
 630
 631                 if (ret == ERROR_NO_MORE_ITEMS)
 632                         break;
 633
 634                 if (ret != ERROR_SUCCESS) {
 635                         wpa_printf(MSG_DEBUG, "RegEnumKeyEx failed: 0x%x (%d)",
 636                                    (unsigned int) ret, (int) GetLastError());
 637                         break;
 638                 }
 639
 640                 if (namelen >= 255)
 641                         namelen = 255 - 1;
 642                 name[namelen] = TEXT('\0');
 643
 644                 ret = RegDeleteKey(nhk, name);
 645                 if (ret != ERROR_SUCCESS) {
 646                         wpa_printf(MSG_DEBUG, "RegDeleteKey failed: 0x%x (%d)",
 647                                    (unsigned int) ret, (int) GetLastError());
 648                         errors++;
 649                 }
 650         }
 651
 652         RegCloseKey(nhk);
 653
 654         return errors ? -1 : 0;
 655 }
 656
 657
 658 static void write_str(HKEY hk, const char *field, struct wpa_ssid *ssid)
 659 {
 660         char *value = wpa_config_get(ssid, field);
 661         if (value == NULL)
 662                 return;
 663         wpa_config_write_reg_string(hk, field, value);
 664         os_free(value);
 665 }
 666
 667
 668 static void write_int(HKEY hk, const char *field, int value, int def)
 669 {
 670         char val[20];
 671         if (value == def)
 672                 return;
 673         os_snprintf(val, sizeof(val), "%d", value);
 674         wpa_config_write_reg_string(hk, field, val);
 675 }
 676
 677
 678 static void write_bssid(HKEY hk, struct wpa_ssid *ssid)
 679 {
 680         char *value = wpa_config_get(ssid, "bssid");
 681         if (value == NULL)
 682                 return;
 683         wpa_config_write_reg_string(hk, "bssid", value);
 684         os_free(value);
 685 }
 686
 687
 688 static void write_psk(HKEY hk, struct wpa_ssid *ssid)
 689 {
 690         char *value = wpa_config_get(ssid, "psk");
 691         if (value == NULL)
 692                 return;
 693         wpa_config_write_reg_string(hk, "psk", value);
 694         os_free(value);
 695 }
 696
 697
 698 static void write_proto(HKEY hk, struct wpa_ssid *ssid)
 699 {
 700         char *value;
 701
 702         if (ssid->proto == DEFAULT_PROTO)
 703                 return;
 704
 705         value = wpa_config_get(ssid, "proto");
 706         if (value == NULL)
 707                 return;
 708         if (value[0])
 709                 wpa_config_write_reg_string(hk, "proto", value);
 710         os_free(value);
 711 }
 712
 713
 714 static void write_key_mgmt(HKEY hk, struct wpa_ssid *ssid)
 715 {
 716         char *value;
 717
 718         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 719                 return;
 720
 721         value = wpa_config_get(ssid, "key_mgmt");
 722         if (value == NULL)
 723                 return;
 724         if (value[0])
 725                 wpa_config_write_reg_string(hk, "key_mgmt", value);
 726         os_free(value);
 727 }
 728
 729
 730 static void write_pairwise(HKEY hk, struct wpa_ssid *ssid)
 731 {
 732         char *value;
 733
 734         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 735                 return;
 736
 737         value = wpa_config_get(ssid, "pairwise");
 738         if (value == NULL)
 739                 return;
 740         if (value[0])
 741                 wpa_config_write_reg_string(hk, "pairwise", value);
 742         os_free(value);
 743 }
 744
 745
 746 static void write_group(HKEY hk, struct wpa_ssid *ssid)
 747 {
 748         char *value;
 749
 750         if (ssid->group_cipher == DEFAULT_GROUP)
 751                 return;
 752
 753         value = wpa_config_get(ssid, "group");
 754         if (value == NULL)
 755                 return;
 756         if (value[0])
 757                 wpa_config_write_reg_string(hk, "group", value);
 758         os_free(value);
 759 }
 760
 761
 762 static void write_auth_alg(HKEY hk, struct wpa_ssid *ssid)
 763 {
 764         char *value;
 765
 766         if (ssid->auth_alg == 0)
 767                 return;
 768
 769         value = wpa_config_get(ssid, "auth_alg");
 770         if (value == NULL)
 771                 return;
 772         if (value[0])
 773                 wpa_config_write_reg_string(hk, "auth_alg", value);
 774         os_free(value);
 775 }
 776
 777
 778 #ifdef IEEE8021X_EAPOL
 779 static void write_eap(HKEY hk, struct wpa_ssid *ssid)
 780 {
 781         char *value;
 782
 783         value = wpa_config_get(ssid, "eap");
 784         if (value == NULL)
 785                 return;
 786
 787         if (value[0])
 788                 wpa_config_write_reg_string(hk, "eap", value);
 789         os_free(value);
 790 }
 791 #endif /* IEEE8021X_EAPOL */
 792
 793
 794 static void write_wep_key(HKEY hk, int idx, struct wpa_ssid *ssid)
 795 {
 796         char field[20], *value;
 797
 798         os_snprintf(field, sizeof(field), "wep_key%d", idx);
 799         value = wpa_config_get(ssid, field);
 800         if (value) {
 801                 wpa_config_write_reg_string(hk, field, value);
 802                 os_free(value);
 803         }
 804 }
 805
 806
 807 static int wpa_config_write_network(HKEY hk, struct wpa_ssid *ssid, int id)
 808 {
 809         int i, errors = 0;
 810         HKEY nhk, netw;
 811         LONG ret;
 812         TCHAR name[5];
 813
 814         ret = RegOpenKeyEx(hk, TEXT("networks"), 0, KEY_CREATE_SUB_KEY, &nhk);
 815         if (ret != ERROR_SUCCESS) {
 816                 wpa_printf(MSG_DEBUG, "WINREG: Could not open networks key "
 817                            "for subkey addition: error 0x%x (%d)",
 818                            (unsigned int) ret, (int) GetLastError());
 819                 return 0;
 820         }
 821
 822 #ifdef UNICODE
 823         wsprintf(name, L"%04d", id);
 824 #else /* UNICODE */
 825         os_snprintf(name, sizeof(name), "%04d", id);
 826 #endif /* UNICODE */
 827         ret = RegCreateKeyEx(nhk, name, 0, NULL, 0, KEY_WRITE, NULL, &netw,
 828                              NULL);
 829         RegCloseKey(nhk);
 830         if (ret != ERROR_SUCCESS) {
 831                 wpa_printf(MSG_DEBUG, "WINREG: Could not add network key '%s':"
 832                            " error 0x%x (%d)",
 833                            name, (unsigned int) ret, (int) GetLastError());
 834                 return -1;
 835         }
 836
 837 #define STR(t) write_str(netw, #t, ssid)
 838 #define INT(t) write_int(netw, #t, ssid->t, 0)
 839 #define INTe(t) write_int(netw, #t, ssid->eap.t, 0)
 840 #define INT_DEF(t, def) write_int(netw, #t, ssid->t, def)
 841 #define INT_DEFe(t, def) write_int(netw, #t, ssid->eap.t, def)
 842
 843         STR(ssid);
 844         INT(scan_ssid);
 845         write_bssid(netw, ssid);
 846         write_psk(netw, ssid);
 847         write_proto(netw, ssid);
 848         write_key_mgmt(netw, ssid);
 849         write_pairwise(netw, ssid);
 850         write_group(netw, ssid);
 851         write_auth_alg(netw, ssid);
 852 #ifdef IEEE8021X_EAPOL
 853         write_eap(netw, ssid);
 854         STR(identity);
 855         STR(anonymous_identity);
 856         STR(password);
 857         STR(ca_cert);
 858         STR(ca_path);
 859         STR(client_cert);
 860         STR(private_key);
 861         STR(private_key_passwd);
 862         STR(dh_file);
 863         STR(subject_match);
 864         STR(altsubject_match);
 865         STR(ca_cert2);
 866         STR(ca_path2);
 867         STR(client_cert2);
 868         STR(private_key2);
 869         STR(private_key2_passwd);
 870         STR(dh_file2);
 871         STR(subject_match2);
 872         STR(altsubject_match2);
 873         STR(phase1);
 874         STR(phase2);
 875         STR(pcsc);
 876         STR(pin);
 877         STR(engine_id);
 878         STR(key_id);
 879         STR(cert_id);
 880         STR(ca_cert_id);
 881         STR(key2_id);
 882         STR(pin2);
 883         STR(engine2_id);
 884         STR(cert2_id);
 885         STR(ca_cert2_id);
 886         INTe(engine);
 887         INTe(engine2);
 888         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 889 #endif /* IEEE8021X_EAPOL */
 890         for (i = 0; i < 4; i++)
 891                 write_wep_key(netw, i, ssid);
 892         INT(wep_tx_keyidx);
 893         INT(priority);
 894 #ifdef IEEE8021X_EAPOL
 895         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 896         STR(pac_file);
 897         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 898 #endif /* IEEE8021X_EAPOL */
 899         INT(mode);
 900         INT(proactive_key_caching);
 901         INT(disabled);
 902         INT(peerkey);
 903 #ifdef CONFIG_IEEE80211W
 904         INT(ieee80211w);
 905 #endif /* CONFIG_IEEE80211W */
 906         STR(id_str);
 907
 908 #undef STR
 909 #undef INT
 910 #undef INT_DEF
 911
 912         RegCloseKey(netw);
 913
 914         return errors ? -1 : 0;
 915 }
 916
 917
 918 static int wpa_config_write_blob(HKEY hk, struct wpa_config_blob *blob)
 919 {
 920         HKEY bhk;
 921         LONG ret;
 922         TCHAR *name;
 923
 924         ret = RegCreateKeyEx(hk, TEXT("blobs"), 0, NULL, 0, KEY_WRITE, NULL,
 925                              &bhk, NULL);
 926         if (ret != ERROR_SUCCESS) {
 927                 wpa_printf(MSG_DEBUG, "WINREG: Could not add blobs key: "
 928                            "error 0x%x (%d)",
 929                            (unsigned int) ret, (int) GetLastError());
 930                 return -1;
 931         }
 932
 933         name = wpa_strdup_tchar(blob->name);
 934         ret = RegSetValueEx(bhk, name, 0, REG_BINARY, blob->data,
 935                             blob->len);
 936         if (ret != ERROR_SUCCESS) {
 937                 wpa_printf(MSG_ERROR, "WINREG: Failed to set blob %s': "
 938                            "error 0x%x (%d)", blob->name, (unsigned int) ret,
 939                            (int) GetLastError());
 940                 RegCloseKey(bhk);
 941                 os_free(name);
 942                 return -1;
 943         }
 944         os_free(name);
 945
 946         RegCloseKey(bhk);
 947
 948         return 0;
 949 }
 950
 951
 952 int wpa_config_write(const char *name, struct wpa_config *config)
 953 {
 954         TCHAR buf[256];
 955         HKEY hk;
 956         LONG ret;
 957         int errors = 0;
 958         struct wpa_ssid *ssid;
 959         struct wpa_config_blob *blob;
 960         int id;
 961
 962         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
 963
 964 #ifdef UNICODE
 965         _snwprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%S"), name);
 966 #else /* UNICODE */
 967         os_snprintf(buf, 256, WPA_KEY_PREFIX TEXT("\\configs\\%s"), name);
 968 #endif /* UNICODE */
 969
 970         ret = RegOpenKeyEx(WPA_KEY_ROOT, buf, 0, KEY_SET_VALUE | DELETE, &hk);
 971         if (ret != ERROR_SUCCESS) {
 972                 wpa_printf(MSG_ERROR, "Could not open wpa_supplicant "
 973                            "configuration registry %s: error %d", buf,
 974                            (int) GetLastError());
 975                 return -1;
 976         }
 977
 978         if (wpa_config_write_global(config, hk)) {
 979                 wpa_printf(MSG_ERROR, "Failed to write global configuration "
 980                            "data");
 981                 errors++;
 982         }
 983
 984         wpa_config_delete_subkeys(hk, TEXT("networks"));
 985         for (ssid = config->ssid, id = 0; ssid; ssid = ssid->next, id++) {
 986                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
 987                         continue; /* do not save temporary WPS networks */
 988                 if (wpa_config_write_network(hk, ssid, id))
 989                         errors++;
 990         }
 991
 992         RegDeleteKey(hk, TEXT("blobs"));
 993         for (blob = config->blobs; blob; blob = blob->next) {
 994                 if (wpa_config_write_blob(hk, blob))
 995                         errors++;
 996         }
 997
 998         RegCloseKey(hk);
 999
1000         wpa_printf(MSG_DEBUG, "Configuration '%s' written %ssuccessfully",
1001                    name, errors ? "un" : "");
1002         return errors ? -1 : 0;
1003 }